diff options
Diffstat (limited to 'include/asm-xtensa/thread_info.h')
| -rw-r--r-- | include/asm-xtensa/thread_info.h | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/include/asm-xtensa/thread_info.h b/include/asm-xtensa/thread_info.h deleted file mode 100644 index 0f4fe1f..0000000 --- a/include/asm-xtensa/thread_info.h +++ /dev/null @@ -1,164 +0,0 @@ -/* - * include/asm-xtensa/thread_info.h - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2001 - 2005 Tensilica Inc. - */ - -#ifndef _XTENSA_THREAD_INFO_H -#define _XTENSA_THREAD_INFO_H - -#ifdef __KERNEL__ - -#ifndef __ASSEMBLY__ -# include <asm/processor.h> -#endif - -/* - * low level task data that entry.S needs immediate access to - * - this struct should fit entirely inside of one cache line - * - this struct shares the supervisor stack pages - * - if the contents of this structure are changed, the assembly constants - * must also be changed - */ - -#ifndef __ASSEMBLY__ - -#if XTENSA_HAVE_COPROCESSORS - -typedef struct xtregs_coprocessor { - xtregs_cp0_t cp0; - xtregs_cp1_t cp1; - xtregs_cp2_t cp2; - xtregs_cp3_t cp3; - xtregs_cp4_t cp4; - xtregs_cp5_t cp5; - xtregs_cp6_t cp6; - xtregs_cp7_t cp7; -} xtregs_coprocessor_t; - -#endif - -struct thread_info { - struct task_struct *task; /* main task structure */ - struct exec_domain *exec_domain; /* execution domain */ - unsigned long flags; /* low level flags */ - unsigned long status; /* thread-synchronous flags */ - __u32 cpu; /* current CPU */ - __s32 preempt_count; /* 0 => preemptable,< 0 => BUG*/ - - mm_segment_t addr_limit; /* thread address space */ - struct restart_block restart_block; - - unsigned long cpenable; - - /* Allocate storage for extra user states and coprocessor states. */ -#if XTENSA_HAVE_COPROCESSORS - xtregs_coprocessor_t xtregs_cp; -#endif - xtregs_user_t xtregs_user; -}; - -#else /* !__ASSEMBLY__ */ - -/* offsets into the thread_info struct for assembly code access */ -#define TI_TASK 0x00000000 -#define TI_EXEC_DOMAIN 0x00000004 -#define TI_FLAGS 0x00000008 -#define TI_STATUS 0x0000000C -#define TI_CPU 0x00000010 -#define TI_PRE_COUNT 0x00000014 -#define TI_ADDR_LIMIT 0x00000018 -#define TI_RESTART_BLOCK 0x000001C - -#endif - -#define PREEMPT_ACTIVE 0x10000000 - -/* - * macros/functions for gaining access to the thread information structure - * - * preempt_count needs to be 1 initially, until the scheduler is functional. - */ - -#ifndef __ASSEMBLY__ - -#define INIT_THREAD_INFO(tsk) \ -{ \ - .task = &tsk, \ - .exec_domain = &default_exec_domain, \ - .flags = 0, \ - .cpu = 0, \ - .preempt_count = 1, \ - .addr_limit = KERNEL_DS, \ - .restart_block = { \ - .fn = do_no_restart_syscall, \ - }, \ -} - -#define init_thread_info (init_thread_union.thread_info) -#define init_stack (init_thread_union.stack) - -/* how to get the thread information struct from C */ -static inline struct thread_info *current_thread_info(void) -{ - struct thread_info *ti; - __asm__("extui %0,a1,0,13\n\t" - "xor %0, a1, %0" : "=&r" (ti) : ); - return ti; -} - -#else /* !__ASSEMBLY__ */ - -/* how to get the thread information struct from ASM */ -#define GET_THREAD_INFO(reg,sp) \ - extui reg, sp, 0, 13; \ - xor reg, sp, reg -#endif - - -/* - * thread information flags - * - these are process state flags that various assembly files may need to access - * - pending work-to-be-done flags are in LSW - * - other flags in MSW - */ -#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ -#define TIF_SIGPENDING 1 /* signal pending */ -#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ -#define TIF_SINGLESTEP 3 /* restore singlestep on return to user mode */ -#define TIF_IRET 4 /* return with iret */ -#define TIF_MEMDIE 5 -#define TIF_RESTORE_SIGMASK 6 /* restore signal mask in do_signal() */ -#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling TIF_NEED_RESCHED */ -#define TIF_FREEZE 17 /* is freezing for suspend */ - -#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) -#define _TIF_SIGPENDING (1<<TIF_SIGPENDING) -#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) -#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP) -#define _TIF_IRET (1<<TIF_IRET) -#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) -#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK) -#define _TIF_FREEZE (1<<TIF_FREEZE) - -#define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */ -#define _TIF_ALLWORK_MASK 0x0000FFFF /* work to do on any return to u-space */ - -/* - * Thread-synchronous status. - * - * This is different from the flags in that nobody else - * ever touches our thread-synchronous status, so we don't - * have to worry about atomic accesses. - */ -#define TS_USEDFPU 0x0001 /* FPU was used by this task this quantum (SMP) */ - -#define THREAD_SIZE 8192 //(2*PAGE_SIZE) -#define THREAD_SIZE_ORDER 1 - -#endif /* __KERNEL__ */ -#endif /* _XTENSA_THREAD_INFO */ |
